Treatment of N-aryl-N-hydroxyamides with diethylaminosulfur trifluoride (DAST) under conventional reaction conditions results in removal of the hydroxy function and introduction of a fluorine atom at the para position of the aromatic ring, in high yield.
Y. Kikugawa, K. Matsumoto, K. Mitsui and T. Sakamoto, J. Chem. Soc., Chem. Commun., 1992, 921 DOI: 10.1039/C39920000921
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